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# Response Codes

Here is the list of response codes that you may get when using our residential proxies.

<table><thead><tr><th width="142">Status Code</th><th width="259">Response</th><th>Description</th></tr></thead><tbody><tr><td>402</td><td>Payment Required</td><td>Proxy bandwidth has run out</td></tr><tr><td>407</td><td>Proxy Authentication Required</td><td>Proxy authentication info missing or wrong</td></tr><tr><td>451</td><td>Unavailable For Legal Reasons</td><td>Target host not whitelisted </td></tr><tr><td>451</td><td>Target Email/SMTP Not Available</td><td>Blocked host</td></tr><tr><td>451</td><td>Target Subnets Not Available</td><td>Blocked host</td></tr><tr><td>512</td><td>No Exit Route Found</td><td>We could not find an IP to satisfy your request</td></tr></tbody></table>